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Add support for StringBuilder.reverse #17

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Merged
peterschrammel merged 1 commit into from
Jun 9, 2019
Merged

Add support for StringBuilder.reverse #17

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14 changes: 11 additions & 3 deletions src/main/java/java/lang/StringBuilder.java
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Original file line number Diff line number Diff line change
Expand Up @@ -611,14 +611,22 @@ public int lastIndexOf(String str, int fromIndex) {
}

/**
* @diffblue.noSupport
* @diffblue.fullSupport
* @diffblue.untested
*/
@Override
public StringBuilder reverse() {
// super.reverse();
// return this;
CProver.notModelled();
return CProver.nondetWithNullForNotModelled();
int size = this.length();
if (size < 2)
return this;
String tmp = this.toString();
CProverString.delete(this, 0, size);
for (int i=size-1; i>=0; --i) {
this.append(CProverString.charAt(tmp, i));
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@romainbrenguier romainbrenguier Dec 3, 2018

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💡 this will create a lot of intermediary strings which could be avoided using one nondetString and then assume on each character, but otherwise it looks fine.

}
return this;
}

/**
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